JPS63251938A - Optical information recording and reproducing device - Google Patents
Optical information recording and reproducing deviceInfo
- Publication number
- JPS63251938A JPS63251938A JP62086323A JP8632387A JPS63251938A JP S63251938 A JPS63251938 A JP S63251938A JP 62086323 A JP62086323 A JP 62086323A JP 8632387 A JP8632387 A JP 8632387A JP S63251938 A JPS63251938 A JP S63251938A
- Authority
- JP
- Japan
- Prior art keywords
- recording medium
- information
- optical
- optical recording
- index area
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 230000003287 optical effect Effects 0.000 title claims abstract description 68
- 238000010586 diagram Methods 0.000 description 7
- 238000000034 method Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 3
- 238000001514 detection method Methods 0.000 description 2
- 235000014121 butter Nutrition 0.000 description 1
- 239000013256 coordination polymer Substances 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D10/00—Energy efficient computing, e.g. low power processors, power management or thermal management
Landscapes
- Optical Recording Or Reproduction (AREA)
- Information Retrieval, Db Structures And Fs Structures Therefor (AREA)
- Optical Record Carriers And Manufacture Thereof (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、レーザー等の光を微小径のスボフトに絞り、
光学式記録媒体にｎ住射し、情報を高密度に記録再生す
る装置に閏する。[Detailed Description of the Invention] [Industrial Application Field] The present invention focuses light such as a laser into a small diameter suboft,
It emits light onto an optical recording medium and is used in a device that records and reproduces information at high density.
光学式記録媒体には再生Ｊ、Ｉｔ川、追記型、（！「き
換え可能型等の種類がある。そして、光学式情報記録再
生装置において使用する記１＆媒体の種類を判別する必
要がある。There are various types of optical recording media, such as reproduction type, IT type, write-once type, and replaceable type.It is necessary to determine the type of recording medium used in the optical information recording and reproducing device. .
そこで、従来の光学式情報記ｌ）再生装置においては、
光学式記録媒体を保護するためのカートリッジに溝吠も
しくは穴蚊の検出手段を設け、これを機械的に検出する
ことにより、光学式記録媒体の種類を判別していた。Therefore, in the conventional optical information recording/reproducing device,
A cartridge for protecting an optical recording medium is provided with means for detecting grooves or holes, and by mechanically detecting this, the type of optical recording medium is determined.
第７図に従来の光学式記録ν体の一例の平面図を示す。FIG. 7 shows a plan view of an example of a conventional optical recording body.
１は、光学性記録媒体、２は、光学式記録媒体１を保護
するカートリッジ、８は、情報の紀ＬＡ＠再生・消去時
に光学式記録媒体を露出させ、前述の動作を可能にする
シャッターである。1 is an optical recording medium, 2 is a cartridge that protects the optical recording medium 1, and 8 is a shutter that exposes the optical recording medium during information erasure/reproduction and enables the above-mentioned operation. be.
カートリッジ２の一部に穴吠の検出手段４が設けられて
おり、穴の空いている位置を機械的に検出し、この光学
式記録媒体が再生専用、追記型、古き換え可能型のいず
れに相当するかを判別する。A hole detection means 4 is provided in a part of the cartridge 2, which mechanically detects the position of the hole and determines whether the optical recording medium is a playback-only type, a write-once type, or an old replaceable type. Determine if it is equivalent.
しかし前述の従来技術では、再生専用、追記型、書き換
え可能型の判別しかできない。しかし、一般に光学式記
録媒体は、その種類により情報の記録・再生・消去動作
に最適なレーザーパワーが異なり、また同じ種類の記録
媒体でも最適レーザーパワーが異なり、記録媒体の互換
という意味で障害とνｉっでいた。また、前述の判別を
機械的に行うため信頼性の面で問題があった。However, the above-mentioned conventional technology can only distinguish between read-only, write-once type, and rewritable type. However, in general, optical recording media have different optimal laser powers for recording, reproducing, and erasing information depending on their type, and even the same type of recording media has different optimal laser powers, which can be a problem in terms of compatibility of recording media. It was νi. Furthermore, since the above-mentioned discrimination is performed mechanically, there is a problem in terms of reliability.
そこで、本発明はこのような問題点を解決するだめのも
ので、その目的とするところは、光学式記録媒体のＭｉ
類を判別し、かつ、情報の記Ｑ−再生・消去動作に最適
なレーザーパワーを読み取り、どのような光学式記録媒
体でも、その使用を可能とする光学式情報記録再生装置
を提供することにある。Therefore, the present invention is intended to solve these problems, and its purpose is to improve the Mi
An object of the present invention is to provide an optical information recording/reproducing device that can use any type of optical recording medium by determining the type of information and reading the optimum laser power for information recording/reproducing/erasing operations. be.
本発明の光学式情報記録再生装置はレーザー光を微小径
に絞り込んで光学式記録媒体に情報を記録再生する光学
式情報記録再生装置において、前述の光学式記録媒体の
情報記録部外にこの光学式記録媒体の種類とＥｋ店レー
ザーパワーを記録したインデックスエリアを設け、この
光学式記録媒体が回転する際に光検出器を用いて前述の
インデックスエリアの情報を読ろ取り、レーザーパワー
を制御することを特徴とする。The optical information recording and reproducing apparatus of the present invention is an optical information recording and reproducing apparatus that records and reproduces information on an optical recording medium by concentrating a laser beam into a minute diameter. An index area is provided in which the type of optical recording medium and laser power are recorded, and when this optical recording medium rotates, a photodetector is used to read the information in the index area and control the laser power. It is characterized by
本発明の上記の（Ｍ成によれば、光学式記録媒体の情報
記録部外にインデックスエリアを設け、ここに記録媒体
の種類および情報の再生、記録、消去に最適なレーザー
パワーを記１１ しておき、この情報を記録媒体が回転
する際に読み込むことにより、どのような記録媒体も使
用可能となる。According to the above (M) configuration of the present invention, an index area is provided outside the information recording section of the optical recording medium, and the type of recording medium and the optimum laser power for reproducing, recording, and erasing information are recorded here. By reading this information when the recording medium rotates, any recording medium can be used.
以−ド、本発明について図面に基づいて詳細に説明する
。第１図は、本発明に使用する光学式記録媒体の平面図
である。１は、光学式記録媒体、２１は、光学式記録媒
体ｌ上に設けられたユーザーエリアである。ここにユー
ザーが情報を記録する。Hereinafter, the present invention will be explained in detail based on the drawings. FIG. 1 is a plan view of an optical recording medium used in the present invention. 1 is an optical recording medium, and 21 is a user area provided on the optical recording medium l. This is where the user records information.
２２は、この光学式記録媒体１の種類および情報の記録
・再生・消去に最適なレーザーパワーがバーコード等で
記録されているインデックスエリアである。このインデ
ックスエリア２２は、光学式記録媒体！上に直接印刷、
もしくはこのインデックスエリアの情報が印刷された紙
を貼り付けることにより形成される。または、光学式記
録媒体の作製時にユーザーエリア２１上に設けられてい
る凹凸状のピットと同様のピットにより明暗のバター７
を形成してもよい。22 is an index area in which the type of optical recording medium 1 and the optimum laser power for recording, reproducing, and erasing information are recorded in a bar code or the like. This index area 22 is an optical recording medium! Print directly on the
Alternatively, the index area can be formed by pasting paper on which information is printed. Alternatively, bright and dark butter 7 can be created by pits similar to the uneven pits provided on the user area 21 when producing an optical recording medium.
may be formed.
第２図に、インデックスエリア２２の詳細図を示す。２
３は、光学式記録媒体の！！Ｉｔ類（再生専用、追記型
、古き換え可能型等）が記録されている種別情報部、２
４は、再生時のＱ適し−ザーパワーが記録されている再
生パワー情報部、２５は、記録時のＱｉｌｌレーザーパ
ワーが記録されている記録パワー情報部、２Ｇは、消去
時の９ｍレーザーパワーが記録されている消去パワー情
報部である。２７〜２９は、前述の各情報部を区別する
ためのギャップ部である。各情報部はバーコードのよう
な明暗のパターンにより形成される。再生専用の光学式
記録媒体においては２５＠２０、追記型の光学式記録媒
体においては２ｏが省略される。光学式記録媒体が回転
する際、２３から順に読み取られて行く、この動作は、
ユーザーエリア２１の情報を後述の光学ピックアップが
記録再生する前に行う。FIG. 2 shows a detailed diagram of the index area 22. 2
3 is an optical recording medium! ! Type information section in which IT types (playback only, write-once type, old replaceable type, etc.) are recorded, 2
4 is a playback power information section in which the Q-suitable laser power during playback is recorded, 25 is a recording power information section in which the Qill laser power during recording is recorded, and 2G is a 9m laser power during erasing. This is the erase power information section. 27 to 29 are gap portions for distinguishing each of the above-mentioned information portions. Each information section is formed by a light and dark pattern like a barcode. 25@20 is omitted in a read-only optical recording medium, and 2o is omitted in a write-once optical recording medium. When the optical recording medium rotates, it is read sequentially starting from 23. This operation is as follows:
This is done before the information in the user area 21 is recorded and reproduced by an optical pickup, which will be described later.
一般に光学式情報記録再用装置には、光学式記録媒体の
回転数が半径位置に依らず一定のＣＡＭ方式と、線速度
が一定となるように半径位置によって光学式記録媒体の
回転数を変化されるＣＬＶ方式がある。ところで最適な
情報の再生・記録・１１′Ｉ去パワーは、３Ｌ！録媒体
の線速度によって変化させる必要がある。従って、ＣＬ
Ｖ方式においては光学式記録媒体の最内周から最外周に
渡って一定の再生・記録・消去バ「ノーでよいが、ＣＡ
Ｖ方式においては、光学式記録媒体の半径位置によって
これらのパワーを変化させる必要がある。そして、これ
らのパワーは光学式記録媒体の半径位置を「とすると、
「の平方根に比例すると言われている。そこで、ＣＡＶ
方式においては、第２図で示されたインデックスエリア
２２の書式を若干変更する必要がある。この変更部分の
一部のｆｆｌ’ｉ細図を第３図に示す８２５ａは、光学
式記録媒体上の最内周での最滴記録パワーが記録されて
いる記録バゾー↑Ｉ７報部ａ、２２ｂは最外周での最適
記録パワーが記録されている記録パワー情報部すである
。２７ａは２５ａと２５ｂを区別するギャップ部である
。この二つの情報から内挿することによって光学式記録
媒体の各半径位置で最適レーザーパワーで情報の記録を
行うことができる。再生パワー情報部２４、消去パワー
情報部２Ｇについても同様の古式を用いる。In general, optical information recording and reuse devices have two types: CAM system in which the rotational speed of the optical recording medium is constant regardless of the radial position, and CAM method in which the rotational speed of the optical recording medium is changed depending on the radial position so that the linear velocity is constant. There is a CLV method. By the way, the optimal information playback/recording power is 3L! It is necessary to change it depending on the linear velocity of the recording medium. Therefore, C.L.
In the V method, a constant reproduction/record/erase bar is applied from the innermost circumference to the outermost circumference of the optical recording medium.
In the V method, it is necessary to change these powers depending on the radial position of the optical recording medium. Then, these powers are calculated as follows, assuming that the radial position of the optical recording medium is
It is said that CAV is proportional to the square root of
In this method, it is necessary to slightly change the format of the index area 22 shown in FIG. 825a, which shows a detailed diagram of a part of this changed part in FIG. 3, is the recording section ↑I7 report section a, 22b where the maximum droplet recording power at the innermost circumference on the optical recording medium is recorded. is a recording power information section in which the optimum recording power at the outermost circumference is recorded. 27a is a gap portion that distinguishes 25a and 25b. By interpolating from these two pieces of information, information can be recorded at each radial position of the optical recording medium with the optimum laser power. The same old formula is used for the reproduction power information section 24 and the erasure power information section 2G.
第４図に、本発明の光学式情報記０再川装置の概略図を
示す。１１は、光学式記録媒体に情報を記録再生する光
学ピックアップ、１２は、光学式記録媒体を回転させる
スピンドルモーター、１３はスピンドルモーター軸であ
る。光学式記り媒体がこの図に示されている様に回転す
る際、光学式記報媒体ｌ上に設けられたインデックスエ
リア２２に記録されている情報をバーコードリーダー等
の反射型光検出器１４で読み取りこの情報に応じてレザ
ーパワーを制御する。FIG. 4 shows a schematic diagram of the optical information recording device of the present invention. 11 is an optical pickup for recording and reproducing information on an optical recording medium, 12 is a spindle motor for rotating the optical recording medium, and 13 is a spindle motor shaft. When the optical recording medium rotates as shown in this figure, the information recorded in the index area 22 provided on the optical recording medium l is detected by a reflective photodetector such as a barcode reader. 14 and control the laser power according to this information.
′：ｊＳ５図に、本発明の反射型光検出器の概略図を示
す。１４ａは発光ダイオード等の光源、１４ｂはフォト
ダイ］−ド等の光検出器である。インデックスエリア２
２上に設けられた明暗のパターンを読み取り、情報を識
別する。':jS5 shows a schematic diagram of the reflective photodetector of the present invention. 14a is a light source such as a light emitting diode, and 14b is a photodetector such as a photodiode. Index area 2
2. Read the light and dark pattern provided on the screen to identify the information.
第６図に、本発明のレーザーパワー制御のブロック図を
示す。光検出器１４からの信号が識別回路３１に入り、
この信号がＣＰＵ３２に送られ、光学式記報媒体の種類
およびａｍ再生・記録・消去パワーを判別する。そして
、Ｄ／Ａコンバーター３３を介してレーザー駆動回路３
４に必要な信号を与え、レーザー３５を最適なパワーで
駆動し、情報の再生・記録・消去を行う、前述のように
、ＣＡＶ方式の場合は記録媒体の半径位置によりレーザ
ーパワーを変える必要があるため、位置検出器３６より
光学ピックアップ１１の位置を読み取り、この情報をＣ
ＰＵ３２に与え、半径位置に応じた＠店し−ザーパワー
で情報の再生・記Ｌ１１１消去を行うようにレーザーを
制御する。FIG. 6 shows a block diagram of laser power control according to the present invention. The signal from the photodetector 14 enters the identification circuit 31,
This signal is sent to the CPU 32, which determines the type of optical recording medium and the AM reproduction/recording/erasing power. Then, the laser drive circuit 3 is connected via the D/A converter 33.
4, the laser 35 is driven with optimal power to reproduce, record, and erase information.As mentioned above, in the case of the CAV method, it is necessary to change the laser power depending on the radial position of the recording medium. Therefore, the position of the optical pickup 11 is read from the position detector 36 and this information is sent to C.
The laser is given to the PU 32 to control the laser so that the information is reproduced and erased using the laser power according to the radial position.
以上述べたように本発明によれば、光学式記録媒体の情
報記録部外にインデックスエリアを設け、ここに記録媒
体の種類および情報の再生・紀ｇ−消去に最適なレーザ
ーパワーを記録しておき、この情報を記録媒体の回転時
に読ろ込むことにより、どのような記録媒体に対しても
、常に最適なレーザーパワーで情報の再生・記録・消去
が行え、記録媒体の互換性を確保することが可能になる
という効果を任する。As described above, according to the present invention, an index area is provided outside the information recording section of an optical recording medium, and the type of recording medium and the optimum laser power for reproducing/erasing information are recorded there. By reading this information when the recording medium rotates, information can be reproduced, recorded, and erased with the optimal laser power for any recording medium, ensuring compatibility of the recording medium. Leave the effect that it becomes possible.
また、両面貼り合わせの記録媒体を用いる場合、記録媒
体の種類に応じたインデックスエリアをそれぞれの面上
に設けることにより、表と裏で違う種類の記録媒体、例
えば、再生専用型と書き換え可能型を用いることもでき
る。In addition, when using a double-sided bonded recording medium, by providing an index area on each side according to the type of recording medium, it is possible to use different types of recording media on the front and back, for example, read-only type and rewritable type. You can also use
第１図は、本発明の光学式記録媒体の平面図、第２図は
、本発明のインデックスエリアの詳細図、第３図は、本
発明のインデックスエリアの一部の詳細図、ｍ４図は、
本発明の光学式情報記録再生装置の概略図、第５図は、
本発明の反射型光検出器の概略図、第６図は、本発明の
レザーパワープ
２ ・・・ カ − ト リ ッ ジ３・・・
シャブタ−
４・・・検出；１；−ル
１１・・・光学ピックアップ
】２・・・スピンドルモーター
１８・・・スピンドル軸
１４・・・光検出器
２１・・・ユーザーエリア
２２・・・インデックスエリア
２３・・・種別情報部
２４・・・再生パワー情報部
２５・・・記録パワー情報部
２６・・・消去パワー情報部
２７〜２９・・・ギャップ部
３１・・・識別回路
３２・・・ＣＰ Ｕ
３３・・・Ｄ／Ａコンバーター
３４・・・レーザー駆動回路
３５・・・レーザー
３６・・・位置検出器
以 上
第 １Ｆｌ］
２５ 言ヒ４翫Ｒワー１鳩畠）醪
第２図
２２ インチちクスエリア
第４０
第７図Fig. 1 is a plan view of the optical recording medium of the present invention, Fig. 2 is a detailed view of the index area of the present invention, Fig. 3 is a detailed view of a part of the index area of the present invention, and Fig. ,
A schematic diagram of the optical information recording/reproducing apparatus of the present invention, FIG.
FIG. 6, a schematic diagram of the reflective photodetector of the present invention, shows the laser power amplifier 2...cartridge 3...of the present invention.
Shabtar 4...Detection;1;-Rule 11...Optical pickup]2...Spindle motor 18...Spindle shaft 14...Photodetector 21...User area 22...Index area 23... Type information section 24... Reproduction power information section 25... Recording power information section 26... Erasing power information section 27-29... Gap section 31... Identification circuit 32... CP U 33...D/A converter 34...Laser drive circuit 35...Laser 36...Position detector and above 1st Fl] 25 4 rods R 1 Hatobata) Moromi 22 inches Chikusu Area No. 40 Figure 7
Claims (4)
に情報を記録再生する光学情報記録再生装置において、
前記光学式記録媒体の情報記録部外に前記光学式記録媒
体の種類と最適レーザーパワーを記録したインデックス
エリアを設け、前記光学式記録媒体が回転する際に光検
出器を用いて前記インデックスエリアの情報を読み取り
、レーザーパワーを制御することを特徴とする光学式情
報記録再生装置。(1) In an optical information recording and reproducing device that records and reproduces information on an optical recording medium by narrowing a laser beam to a minute diameter,
An index area in which the type of the optical recording medium and the optimum laser power are recorded is provided outside the information recording section of the optical recording medium, and when the optical recording medium rotates, a photodetector is used to detect the index area. An optical information recording and reproducing device that reads information and controls laser power.
に直接印刷することにより形成することを特徴とする特
許請求の範囲第１項記載の光学式情報記録再生装置。(2) The optical information recording and reproducing apparatus according to claim 1, wherein the index area is formed by directly printing on the optical recording medium.
学式記録媒体上に貼り付けることを特徴とする特許請求
の範囲第１項記載の光学式情報記録再生装置。(3) The optical information recording/reproducing apparatus according to claim 1, wherein the index area is printed on paper or the like and pasted onto the optical recording medium.
に凹凸状のピットで形成することを特徴とする特許請求
の範囲１項記載の光学式情報記録再生装置。(4) The optical information recording/reproducing apparatus according to claim 1, wherein the index area is formed by uneven pits during production of the optical recording medium.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62086323A JPS63251938A (en) | 1987-04-08 | 1987-04-08 | Optical information recording and reproducing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62086323A JPS63251938A (en) | 1987-04-08 | 1987-04-08 | Optical information recording and reproducing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS63251938A true JPS63251938A (en) | 1988-10-19 |
Family
ID=13883628
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62086323A Pending JPS63251938A (en) | 1987-04-08 | 1987-04-08 | Optical information recording and reproducing device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63251938A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02148418A (en) * | 1988-11-29 | 1990-06-07 | Matsushita Electric Ind Co Ltd | Optical reproducing device and recording medium |
| EP0487321A2 (en) * | 1990-11-20 | 1992-05-27 | Sharp Kabushiki Kaisha | Optical disk drive |
| JPH06325409A (en) * | 1992-12-07 | 1994-11-25 | Sanyo Electric Co Ltd | Disk and disk recorder |
| EP1026670A2 (en) * | 1999-02-02 | 2000-08-09 | Matsushita Electric Industrial Co., Ltd. | Optical recording medium and recording/reproduction method and apparatus therefor |
| US6552982B1 (en) | 1999-03-08 | 2003-04-22 | Matsushita Electric Industrial Co., Ltd. | Information recording medium, information recording and reproduction method, and information recording and reproduction apparatus |
| WO2004006250A1 (en) * | 2002-07-02 | 2004-01-15 | Sony Corporation | Recordiing medium, recording method, information transmission method, terminal, and server |
-
1987
- 1987-04-08 JP JP62086323A patent/JPS63251938A/en active Pending
Cited By (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02148418A (en) * | 1988-11-29 | 1990-06-07 | Matsushita Electric Ind Co Ltd | Optical reproducing device and recording medium |
| EP0487321A2 (en) * | 1990-11-20 | 1992-05-27 | Sharp Kabushiki Kaisha | Optical disk drive |
| US5315567A (en) * | 1990-11-20 | 1994-05-24 | Sharp Kabushiki Kaisha | Optical disk formatting system using index mark detecting circuit |
| JPH06325409A (en) * | 1992-12-07 | 1994-11-25 | Sanyo Electric Co Ltd | Disk and disk recorder |
| EP1026670A3 (en) * | 1999-02-02 | 2000-08-30 | Matsushita Electric Industrial Co., Ltd. | Optical recording medium and recording/reproduction method and apparatus therefor |
| US6411575B1 (en) | 1999-02-02 | 2002-06-25 | Matsushita Electric Industrial Co., Ltd. | Optical recording medium having an area for recording a plurality of recording/reproduction conditions to be used in recording/reproduction apparatuses and recording/reproduction method and apparatus therefor |
| EP1026671A1 (en) * | 1999-02-02 | 2000-08-09 | Matsushita Electric Industrial Co., Ltd. | Optical recording medium and recording/reproduction method and apparatus therefor |
| WO2000046798A1 (en) * | 1999-02-02 | 2000-08-10 | Matsushita Electric Industrial Co., Ltd. | Optical recording medium and recording / reproduction method and apparatus therefor |
| EP1026670A2 (en) * | 1999-02-02 | 2000-08-09 | Matsushita Electric Industrial Co., Ltd. | Optical recording medium and recording/reproduction method and apparatus therefor |
| EP1026669A3 (en) * | 1999-02-02 | 2000-08-30 | Matsushita Electric Industrial Co., Ltd. | Optical recording medium and recording/reproduction method and apparatus therefor |
| EP1031967A1 (en) * | 1999-02-02 | 2000-08-30 | Matsushita Electric Industrial Co., Ltd. | Optical recording medium and recording/reproduction method and apparatus therefor |
| EP1026669A2 (en) * | 1999-02-02 | 2000-08-09 | Matsushita Electric Industrial Co., Ltd. | Optical recording medium and recording/reproduction method and apparatus therefor |
| US6414922B1 (en) | 1999-02-02 | 2002-07-02 | Matsushita Electric Industrial Co., Ltd. | Optical recording medium having an area for recording a plurality of recording/reproduction conditions to be used in recording/reproduction apparatuses and recording/reproduction method and apparatus therefore |
| US6469964B1 (en) | 1999-02-02 | 2002-10-22 | Matsushita Electric Industrial Co., Ltd. | Optical recording medium and recording/reproduction method and apparatus therefor |
| US6535468B2 (en) | 1999-02-02 | 2003-03-18 | Matsushita Electric Industrial Co., Ltd. | Optical recording medium having an area for recording a plurality of recording/reproduction conditions to be used in recording/reproduction apparatuses and recording/reproduction method and apparatus therefor |
| US6552982B1 (en) | 1999-03-08 | 2003-04-22 | Matsushita Electric Industrial Co., Ltd. | Information recording medium, information recording and reproduction method, and information recording and reproduction apparatus |
| US6940795B2 (en) | 1999-03-08 | 2005-09-06 | Matsushita Electric Industrial Co., Ltd. | Information recording medium, information recording and reproduction method, and information recording and reproduction apparatus |
| WO2004006250A1 (en) * | 2002-07-02 | 2004-01-15 | Sony Corporation | Recordiing medium, recording method, information transmission method, terminal, and server |
| US7673154B2 (en) | 2002-07-02 | 2010-03-02 | Sony Corporation | Recording medium, recording method, information transmission method, terminal device, and server device |
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